<template>
    <div v-if="isExternal" :style="styleExternalIcon" class="svg-external-icon svg-icon" v-on="$listeners" />
    <i v-else :class="svgClass">
        <svg aria-hidden="true" v-on="$listeners">
            <use :href="iconName" />
        </svg>
    </i>
</template>

<script>
export default {
    name: 'SvgIcon',
    props: {
        iconClass: {
            type: String,
            required: true,
        },
        className: {
            type: String,
            default: '',
        },
    },
    computed: {
        isExternal() {
            return /^(https?:|mailto:|tel:)/.test(this.iconClass);
        },
        iconName() {
            return `#icon-${this.iconClass}`;
        },
        svgClass() {
            if (this.className) {
                return 'svg-icon ' + this.className;
            } else {
                return 'svg-icon';
            }
        },
        styleExternalIcon() {
            return {
                mask: `url(${this.iconClass}) no-repeat 50% 50%`,
                '-webkit-mask': `url(${this.iconClass}) no-repeat 50% 50%`,
            };
        },
    },
};
</script>

<style lang="scss" scoped>
.svg-icon {
    display: inline-block;
    font-style: normal;
    text-align: center;
    text-transform: none;
    line-height: 0;
    vertical-align: -0.18em;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;

    svg {
        width: 1em;
        height: 1em;
        fill: currentColor;
    }
}

.svg-external-icon {
    background-color: currentColor;
    mask-size: cover !important;
    display: inline-block;
}
</style>
